Dense wavelength division multiplexing system is processing at a superfying due to very high transmission capacity in optical communication. In this research article, we analysis 64 channels DWDM system at 10 Gbps data rate is used to rectify the system quality at different power levels and different frequency spacing an 50 km Single Mode Fiber (SMF). For the batter gain we used EDFA (Erbium Doped Amplifiers), system efficiency and system capacity enhancing using DCF in this work. Also simulation at different power levels and frequency spacing analyze BER, Q-factor and Eye height is the terms of results using Optisystem software.

The Dense Wavelength Division Multiplexing (DWDM) is an optical fiber transmission framework that utilizes firmly dispersed light frequencies and transmits many data at the same time. This gives a practical technique to expand the limit of the existing system. The goal of the existing Fiber multi-channel communication system is demonstrating the concept of DWDM communication system cover up more and more data to send and receive a whole long stretch communication framework. In this analysis, we using OptiSystem simulation software for 32 x 40 GB/s DWDM communication fiber length 50 km Single-Mode Fiber (SMF) at Different channel Spacing likewise 80GHz, 90GHz and 100Ghz in DWDM for bit rate 40 Gb/s. Dispersion can be completely compensated with the aid of using Dispersion compensating fiber as a compensator. In this paper, the general execution of 32 channel DWDM correspondence with 40 Gbps bit rates researched.

This work is proposed to examine the modified duobinary modulation scheme in a fast DWDM framework. In this work, the system is simulated with 32 channels having a limit of 40 Gbps multiplexed with the channel spacing of 80 90 and 100 GHz to perceive 1.2 Tbps complete transmission distance over the optical range of 250 km by utilizing scattering remuneration strategy. The 40 Gbps is encoded by utilizing Mach Zehnder modulator (MRZ) inferred by CW laser of power - 10 dBm, - 5 dBm,0 dBm,5 dBm,10 dBm. In the system analysis, we use modified duobinary return to zero (MDRZ) in the DWDM system. The impacts of a variety of channel dividing on transmission distance are seen as far as Q Factor, absolute power got and changing distance keeping BER in an acceptable range.

The ideal way to approach a modern communication system that needs to be improved and used for high data rate transmission is with DWDM. In this study, we employ DWDM communication systems with 64 channels, different data speeds, and a dispersion compensation method. The pulse enlargement effect of transmitted light in the optical fiber is constrained by the dispersion reimbursement approach. DCF brought are simulated, analysed, and done to explore the sixty-four channels DWDM machine using DCF for NRZ modulation format at varied Bit Rate with several energy tiers to resolve the dispersion effect. The suggested method for 10 to 40 Gbps uses an NRZ modulation technique with an erbium doped fibre amplifier (EDFA) over a single mode fibre transmission distance of 40 to 160 km and a dispersion compensation fibre of 8 to 32 km (DCF). The developed model's performance is measured in terms of Quality factor, Bit Error Rate (BER), Eye Height, and Threshold at two input energy levels from an optical power source over the 0.625 Tbps to 2.5 Tbps communication capacity.

In this work, we use CSRZ modulation at 32 x 40 Gbps DWDM long-haul communication system under the effect of non-linearities using the dispersion compensation technique. The proposed system performance is measured at 30 GHz, 40 GHz, and 50 GHz channel spacing in terms of BER, Q-factor, and eye-diagram for the varied launched laser power ranging from −5 dBm to 10 dBm of CW laser array and 6000km transmission distances. We use three EDFA amplifiers for signal amplification to boost signal power. By optimizing the system parameters, we use pre and post-Gaussian filters at the transmission distance of 6000 km is achieved for a BER value of 1.4306E-010 with a corresponding Q-factor value of 6.30611 at 5 dBm input power at 30GHz channel spacing and without the Gaussian filter, we achieve Q factor is 4.18952 and BER is 1.35038E-05 at -5 dBm power level at 50GHz channel spacing.